In MariaDB, UNHEX() is a built-in string function that performs the inverse operation of the HEX() function.
Whereas, the HEX() function returns a hexadecimal representation of a given string, the UNHEX() function returns the string representation of a given hexadecimal value.
Specifically, UNHEX() interprets each pair of hexadecimal digits in its argument as a number, and then converts it to the character represented by the number.
The result is returned as a binary string.
In MariaDB, HEX() is a built-in string function that returns a hexadecimal string representation of its argument.
In MariaDB, FORMAT() is a built-in string function that formats and returns the given number as a string.
It requires two arguments, and accepts an optional third argument. The first is the number you want to format, the second is the decimal position, and the (optional) third is the locale.
In MariaDB, FROM_BASE64() is a built-in string function that decodes the given base-64 encoded string.
It returns the result as a binary string.
In MariaDB, TO_BASE64() is a built-in string function that converts its string argument to its base-64 encoded form.
The TO_BASE64() function returns its result as a character string in the connection character set and collation (see how to get your connection’s collation).
When you run a query against a MariaDB database, MariaDB uses a bunch of system variables to determine which character set and collation to use whenever queries are run. If the client uses a different character set to the server, then MariaDB can translate it into an appropriate character set and collation.
When sending the query results back to the client, MariaDB can translate these results back to a different character set altogether if required. MariaDB uses system variables to determine which character sets and collations to use at each of these steps.
Here are three ways to show the connection collation in MariaDB.
You can use the T-SQL code below to convert a month number to its corresponding name in SQL Server.
This is for times where you don’t actually have the full date – when all you have is the month number. If you do have the date, then here’s how to get the month name from a date.
In MariaDB, EXPORT_SET() is a built-in string function that returns a string that reflects the bits in the specified value. For every bit set in the specified value, you get an “on” string and for every bit not set in the value, you get an “off” string.
It accepts a minimum of three arguments, plus two optional arguments.
In MariaDB, FIND_IN_SET() is a built-in string function that returns the index position where the given pattern occurs in the specified string list.
It accepts two arguments. The first is the pattern you want to search for. The second argument is a string containing comma-separated values for which to match the pattern against.
In MariaDB, FIELD() is a built-in string function that returns the index position of the string or number matching the specified pattern.
It accepts two or more arguments. The first is the pattern you want to search for. All subsequent arguments are the strings or numbers for which to match the pattern against.